Initial import package libffi: A portable foreign function interface libraryHEAD2.0_alphamaster2.0alpha1.0_post

1 files changed, 140 insertions, 0 deletions

diff --git a/testsuite/libffi.call/cls_pointer_stack.c b/testsuite/libffi.call/cls_pointer_stack.c
new file mode 100644
index 0000000..697f271
--- /dev/null
+++ b/testsuite/libffi.call/cls_pointer_stack.c
@@ -0,0 +1,140 @@
+/* Area:		ffi_call, closure_call
+   Purpose:		Check pointer arguments across multiple hideous stack frames.
+   Limitations:	none.
+   PR:			none.
+   Originator:	Blake Chaffin 6/7/2007	*/
+
+/* { dg-do run { xfail strongarm*-*-* xscale*-*-* } } */
+#include "ffitest.h"
+
+static	long dummyVar;
+
+long dummy_func(
+	long double a1, char b1,
+	long double a2, char b2,
+	long double a3, char b3,
+	long double a4, char b4)
+{
+	return a1 + b1 + a2 + b2 + a3 + b3 + a4 + b4;
+}
+
+void* cls_pointer_fn2(void* a1, void* a2)
+{
+	long double	trample1	= (intptr_t)a1 + (intptr_t)a2;
+	char		trample2	= ((char*)&a1)[0] + ((char*)&a2)[0];
+	long double	trample3	= (intptr_t)trample1 + (intptr_t)a1;
+	char		trample4	= trample2 + ((char*)&a1)[1];
+	long double	trample5	= (intptr_t)trample3 + (intptr_t)a2;
+	char		trample6	= trample4 + ((char*)&a2)[1];
+	long double	trample7	= (intptr_t)trample5 + (intptr_t)trample1;
+	char		trample8	= trample6 + trample2;
+
+	dummyVar	= dummy_func(trample1, trample2, trample3, trample4,
+		trample5, trample6, trample7, trample8);
+
+	void*	result	= (void*)((intptr_t)a1 + (intptr_t)a2);
+
+	printf("0x%08x 0x%08x: 0x%08x\n", 
+	       (unsigned int)(uintptr_t) a1,
+               (unsigned int)(uintptr_t) a2,
+               (unsigned int)(uintptr_t) result);
+
+	return result;
+}
+
+void* cls_pointer_fn1(void* a1, void* a2)
+{
+	long double	trample1	= (intptr_t)a1 + (intptr_t)a2;
+	char		trample2	= ((char*)&a1)[0] + ((char*)&a2)[0];
+	long double	trample3	= (intptr_t)trample1 + (intptr_t)a1;
+	char		trample4	= trample2 + ((char*)&a1)[1];
+	long double	trample5	= (intptr_t)trample3 + (intptr_t)a2;
+	char		trample6	= trample4 + ((char*)&a2)[1];
+	long double	trample7	= (intptr_t)trample5 + (intptr_t)trample1;
+	char		trample8	= trample6 + trample2;
+
+	dummyVar	= dummy_func(trample1, trample2, trample3, trample4,
+		trample5, trample6, trample7, trample8);
+
+	void*	result	= (void*)((intptr_t)a1 + (intptr_t)a2);
+
+	printf("0x%08x 0x%08x: 0x%08x\n",
+               (unsigned int)(intptr_t) a1,
+               (unsigned int)(intptr_t) a2,
+               (unsigned int)(intptr_t) result);
+
+	result	= cls_pointer_fn2(result, a1);
+
+	return result;
+}
+
+static void
+cls_pointer_gn(ffi_cif* cif __UNUSED__, void* resp, 
+	       void** args, void* userdata __UNUSED__)
+{
+	void*	a1	= *(void**)(args[0]);
+	void*	a2	= *(void**)(args[1]);
+
+	long double	trample1	= (intptr_t)a1 + (intptr_t)a2;
+	char		trample2	= ((char*)&a1)[0] + ((char*)&a2)[0];
+	long double	trample3	= (intptr_t)trample1 + (intptr_t)a1;
+	char		trample4	= trample2 + ((char*)&a1)[1];
+	long double	trample5	= (intptr_t)trample3 + (intptr_t)a2;
+	char		trample6	= trample4 + ((char*)&a2)[1];
+	long double	trample7	= (intptr_t)trample5 + (intptr_t)trample1;
+	char		trample8	= trample6 + trample2;
+
+	dummyVar	= dummy_func(trample1, trample2, trample3, trample4,
+		trample5, trample6, trample7, trample8);
+
+	*(void**)resp = cls_pointer_fn1(a1, a2);
+}
+
+int main (void)
+{
+	ffi_cif	cif;
+        void *code;
+	ffi_closure*	pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
+	void*			args[3];
+//	ffi_type		cls_pointer_type;
+	ffi_type*		arg_types[3];
+
+/*	cls_pointer_type.size = sizeof(void*);
+	cls_pointer_type.alignment = 0;
+	cls_pointer_type.type = FFI_TYPE_POINTER;
+	cls_pointer_type.elements = NULL;*/
+
+	void*	arg1	= (void*)0x01234567;
+	void*	arg2	= (void*)0x89abcdef;
+	ffi_arg	res		= 0;
+
+	arg_types[0] = &ffi_type_pointer;
+	arg_types[1] = &ffi_type_pointer;
+	arg_types[2] = NULL;
+
+	CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &ffi_type_pointer,
+		arg_types) == FFI_OK);
+
+	args[0] = &arg1;
+	args[1] = &arg2;
+	args[2] = NULL;
+
+	printf("\n");
+	ffi_call(&cif, FFI_FN(cls_pointer_fn1), &res, args);
+
+	printf("res: 0x%08x\n", (unsigned int) res);
+	// { dg-output "\n0x01234567 0x89abcdef: 0x8acf1356" }
+	// { dg-output "\n0x8acf1356 0x01234567: 0x8bf258bd" }
+	// { dg-output "\nres: 0x8bf258bd" }
+
+	CHECK(ffi_prep_closure_loc(pcl, &cif, cls_pointer_gn, NULL, code) == FFI_OK);
+
+	res = (ffi_arg)((void*(*)(void*, void*))(code))(arg1, arg2);
+
+	printf("res: 0x%08x\n", (unsigned int) res);
+	// { dg-output "\n0x01234567 0x89abcdef: 0x8acf1356" }
+	// { dg-output "\n0x8acf1356 0x01234567: 0x8bf258bd" }
+	// { dg-output "\nres: 0x8bf258bd" }
+
+	exit(0);
+}